From: "Shawn O. Pearce" <spearce@spearce.org>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org
Subject: [PATCH 1/2] Use git_open_noatime when accessing pack data
Date: Mon, 1 Nov 2010 15:54:20 -0700 [thread overview]
Message-ID: <1288652061-19614-2-git-send-email-spearce@spearce.org> (raw)
In-Reply-To: <1288652061-19614-1-git-send-email-spearce@spearce.org>
This utility function avoids an unnecessary update of the access time
for a loose object file. Just as the atime isn't useful on a loose
object, its not useful on the pack or the corresonding idx file.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
sha1_file.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/sha1_file.c b/sha1_file.c
index f709ed6..a6c1934 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -35,6 +35,8 @@ static size_t sz_fmt(size_t s) { return s; }
const unsigned char null_sha1[20];
+static int git_open_noatime(const char *name);
+
int safe_create_leading_directories(char *path)
{
char *pos = path + offset_1st_component(path);
@@ -298,7 +300,7 @@ static void read_info_alternates(const char * relative_base, int depth)
int fd;
sprintf(path, "%s/%s", relative_base, alt_file_name);
- fd = open(path, O_RDONLY);
+ fd = git_open_noatime(path);
if (fd < 0)
return;
if (fstat(fd, &st) || (st.st_size == 0)) {
@@ -411,7 +413,7 @@ static int check_packed_git_idx(const char *path, struct packed_git *p)
struct pack_idx_header *hdr;
size_t idx_size;
uint32_t version, nr, i, *index;
- int fd = open(path, O_RDONLY);
+ int fd = git_open_noatime(path);
struct stat st;
if (fd < 0)
@@ -655,9 +657,9 @@ static int open_packed_git_1(struct packed_git *p)
if (!p->index_data && open_pack_index(p))
return error("packfile %s index unavailable", p->pack_name);
- p->pack_fd = open(p->pack_name, O_RDONLY);
+ p->pack_fd = git_open_noatime(p->pack_name);
while (p->pack_fd < 0 && errno == EMFILE && unuse_one_window(p, -1))
- p->pack_fd = open(p->pack_name, O_RDONLY);
+ p->pack_fd = git_open_noatime(p->pack_name);
if (p->pack_fd < 0 || fstat(p->pack_fd, &st))
return -1;
--
1.7.3.2.191.g2d0e5
next prev parent reply other threads:[~2010-11-01 22:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-01 22:54 [PATCH 0/2] Work around too many file descriptors Shawn O. Pearce
2010-11-01 22:54 ` Shawn O. Pearce [this message]
2010-11-03 17:07 ` [PATCH 1/2] Use git_open_noatime when accessing pack data Junio C Hamano
2010-11-03 17:41 ` Jonathan Nieder
2010-11-03 19:35 ` Junio C Hamano
2010-11-04 5:04 ` Jonathan Nieder
2010-11-04 5:23 ` Kevin Ballard
2010-11-05 17:26 ` Junio C Hamano
2010-11-01 22:54 ` [PATCH 2/2] Work around EMFILE when there are too many pack files Shawn O. Pearce
2010-11-02 8:44 ` Johannes Sixt
2010-11-03 17:06 ` Junio C Hamano
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